Rhagoriaeth De Cymru (NLW 13128A, t. 302)
Some North Walians, I fear from motives of envy, assert that the Glam Bardism & its concommitant Literature is nothing but an invention of recent Centuries commencing at the time of the Carmarthen Eisteddfod in 1450,
Yet admitting their Charge to be in some degree true, still our [own] writers prove the existence of Literature amongst the Glamorgan Bards, and of Prose literature that which [?is] characteristic of civilization Poetry is universally considered as the Literature of barbarous nations. Prose writing in the Welsh Language appeared in South Wales before any ascertained attempt at it appeared in N.W. The life of G. ap Cynan was beyond a doubt written by a Silurian at least in the Silurian dialect so was Twrog (circa 1400) ystatud Rhuddlan &c.